target.h

   1 ;
   2 ;    Copyright (C) 2010 Kent Hansen.
   3 ;
   4 ;    This program is free software; you can redistribute it and/or modify
   5 ;    it under the terms of the GNU General Public License as published by
   6 ;    the Free Software Foundation; either version 3 of the License, or
   7 ;    (at your option) any later version.
   8 ;
   9 ;    This program is distributed in the hope that it will be useful,
  10 ;    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 ;    GNU General Public License for more details.
  13 ;
  14 ;    You should have received a copy of the GNU General Public License
  15 ;    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 ;
  17
  18 .ifndef TARGET_H
  19 .define TARGET_H
  20
  21 .include "common/fixedpoint.h"
  22
  23 MAX_TARGETS .equ 32
  24
  25 ; Holds the state of a falling target.
  26 ; Types:
  27 ; 0 - normal orb
  28 ; 1 - skull
  29 ; 2 - POW
  30 ; 3 - star
  31 ; 4 - clock
  32 ; 5 - letter (special orb)
  33 ; 6 - fake skull
  34 ; 7 - ???
  35 .struc target_1
  36 state .db    ; b2..0:lane, b5..b3:type, b7:exploding
  37 pos_y .fp_8_8
  38 pos_x .fp_8_8
  39 pad0 .db
  40 .ends
  41
  42 .struc target_2
  43 speed_y .fp_8_8
  44 speed_x .fp_8_8
  45 duration .db ; number of rows it lasts
  46 next .db     ; next target on linked list
  47 .ends
  48
  49 .if sizeof target_1 != sizeof target_2
  50 .error "target_1 and target_2 must have the same size"
  51 .endif
  52
  53 .extrn free_targets_list:byte
  54 .extrn active_targets_head:byte
  55 .extrn active_targets_tail:byte
  56 .extrn targets_1:target_1
  57 .extrn targets_2:target_2
  58
  59 .extrn initialize_target_lists:proc
  60 .extrn move_target:proc
  61 .extrn add_to_active_targets_list:proc
  62
  63 .endif